Using ApacheMQ with Perl Client

Using ApacheMQ with Perl Client

1. install apacheMQ
download the file : apache-activemq-5.5.0-bin.tar.gz
unzip the file
>tar zxvf apache-activemq-5.5.0-bin.tar.gz
>mv apache-activemq-5.5.0/ /opt/activemq/
link the file
>sudo ln -sf /opt/activemq/bin/activemq /etc/init.d/
tell ubuntu to start ActiveMQ on boot:
>sudo update-rc.d activemq defaults

Defaults and Local Configuration
>sudo /etc/init.d/activemq setup /etc/default/activemq

modify the configuration file
>vi /etc/default/activemq
ACTIVEMQ_USER=""

uncomment the lines:
ACTIVEMQ_SUNJMX_START="-Dcom.sun.management.jmxremote.port=11099 "
ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote.password.file=${ACTIVEMQ_CONFIG_DIR}/jmx.password"
ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote.access.file=${ACTIVEMQ_CONFIG_DIR}/jmx.access"
ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote.ssl=false"
ACTIVEMQ_SUNJMX_START="$ACTIVEMQ_SUNJMX_START -Dcom.sun.management.jmxremote"

ACTIVEMQ_SUNJMX_CONTROL="--jmxurl service:jmx:rmi:///jndi/rmi://127.0.0.1:11099/jmxrmi --jmxuser controlRole --jmxpassword abcd1234"
#ACTIVEMQ_SUNJMX_CONTROL=""

error message:
Error: Password file read access must be restricted: /opt/activemq/conf/jmx.password

add my user name to the files
>vi /opt/activemq/conf/jmx.password
>vi /opt/activemq/conf/jmx.access
>sudo chmod 600 /opt/activemq/conf/jmx.access
>sudo chmod 600 /opt/activemq/conf/jmx.password

test if it is work
>netstat -an|grep 61616

access the web console
http://localhost:8161/admin/

I need to start the stomp mode.
>/etc/init.d/activemq stop
>cd /opt/activemq
>bin/activemq console xbean:conf/activemq-stomp.xml

2. Install Perl client API
>cpan
cpan>install Net::Stomp

Net::Stomp is a streaming Text Orientated Messaging Protocol Client

Add a sample queue 'foo' to our activemq.

Below is the example that how to send the message via perl client:
# send a message to the queue 'foo'
use Net::Stomp;
my $stomp = Net::Stomp->new( { hostname => 'localhost', port => '61613' } );
$stomp->connect(
#{ login => 'hello', passcode => 'there' }
);
$stomp->send(
    { destination => '/queue/foo', body => '<userId>sillycat</userId><message>test message</message>' } );
$stomp->disconnect;

Get the message from the queue:
# subscribe to messages from the queue 'foo'
use Net::Stomp;
my $stomp = Net::Stomp->new( { hostname => 'localhost', port => '61613' } );
$stomp->connect(
#{ login => 'hello', passcode => 'there' }
);
$stomp->subscribe(
    {   destination             => '/queue/foo',
        'ack'                   => 'client',
       'activemq.prefetchSize' => 1
    }
);
while (1) {
  my $frame = $stomp->receive_frame;
  #warn $frame->body; # do something here
  $message = $frame->body;
  if($message){
  print $message;
  $stomp->ack( { frame => $frame } );
  last;
  }
}
$stomp->disconnect;

other methods:
# write your own frame
#my $frame = Net::Stomp::Frame->new(
#     { command => $command, headers => $conf, body => $body } );
#$self->send_frame($frame);
# connect with failover supporting similar URI to ActiveMQ
#$stomp = Net::Stomp->new({ failover => "failover://tcp://primary:61616" });
# "?randomize=..." and other parameters are ignored currently
#$stomp = Net::Stomp->new({ failover => "failover:(tcp://primary:61616,tcp://secondary:61616)?randomize=false" });
# Or in a more natural perl way
#$stomp = Net::Stomp->new({ hosts => [
#  { hostname => 'primary', port => 61616 },
#  { hostname => 'secondary', port => 61616 },
#] });

references:
http://activemq.apache.org/
http://activemq.apache.org/getting-started.html
http://hi.baidu.com/luohuazju/blog/item/9902c74e2619f40fb3de05fa.html
http://www.jmkg.co.uk/2010/08/31/installing-activemq-on-ubuntu/
http://servicebus.blogspot.com/2011/02/installing-apache-active-mq-on-ubuntu.html
http://stomp.codehaus.org/Perl%20Client
http://search.cpan.org/dist/Net-Stomp/lib/Net/Stomp.pm
http://activemq.apache.org/stomp.html